I have a mini-itx board and case, stuffed with a full sized Radeon dual-slot GPU, 750w PSU, 16GB of ram, an optical drive + 3.5" card reader, 2x HDD's and 2x SSD's...,.....
with 2x 120mm + 2x 80mm fans & stock HS/F on the cpu, I rarely see temps above 46C....
Heat, hot, hotter...whahdatbe ?